Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11454417 | Rooftop exhaust fan having a mechanism for locking the fan in an open position | Joshua J. Hess | 2022-09-27 |
| 11300317 | Commercial kitchen installation with double wall grease duct | William Brian Griffin, Nicholas I. Perry | 2022-04-12 |